From 94a19bfa8c97481d9d0485ce0f66f8e29a7bbe9b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=87etin?=
 <69278826+cetincakiroglu@users.noreply.github.com>
Date: Wed, 10 Jan 2024 13:12:29 +0300
Subject: [PATCH] Fixed #14370

---
 src/app/components/dropdown/dropdown.ts | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/app/components/dropdown/dropdown.ts b/src/app/components/dropdown/dropdown.ts
index 43cd451fe14..0db7a007900 100755
--- a/src/app/components/dropdown/dropdown.ts
+++ b/src/app/components/dropdown/dropdown.ts
@@ -896,8 +896,10 @@ export class Dropdown implements OnInit, AfterViewInit, AfterContentInit, AfterV
         const options = this.group ? this.flatOptions(this.options) : this.options || [];
 
         if (this._filterValue()) {
+            const _filterBy = this.filterBy || this.optionLabel;
+
             const filteredOptions =
-                !this.filterBy && !this.filterFields && !this.optionValue
+                !_filterBy && !this.filterFields && !this.optionValue
                     ? this.options.filter((option) => option.toLowerCase().indexOf(this._filterValue().toLowerCase()) !== -1)
                     : this.filterService.filter(options, this.searchFields(), this._filterValue(), this.filterMatchMode, this.filterLocale);
             if (this.group) {
@@ -1663,7 +1665,7 @@ export class Dropdown implements OnInit, AfterViewInit, AfterContentInit, AfterV
     }
 
     searchFields() {
-        return this.filterBy.split(',') || this.filterFields || [this.optionLabel];
+        return this.filterBy?.split(',') || this.filterFields || [this.optionLabel];
     }
 
     searchOptions(event, char) {
@@ -1749,4 +1751,3 @@ export class Dropdown implements OnInit, AfterViewInit, AfterContentInit, AfterV
     declarations: [Dropdown, DropdownItem]
 })
 export class DropdownModule {}
-